CN202768836U - Sealing structure between two junction surfaces in hydraulic device - Google Patents
Sealing structure between two junction surfaces in hydraulic device Download PDFInfo
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- CN202768836U CN202768836U CN 201220423251 CN201220423251U CN202768836U CN 202768836 U CN202768836 U CN 202768836U CN 201220423251 CN201220423251 CN 201220423251 CN 201220423251 U CN201220423251 U CN 201220423251U CN 202768836 U CN202768836 U CN 202768836U
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- hollow pin
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Abstract
The utility model discloses a sealing structure between two junction surfaces in a hydraulic device. The sealing structure between the two junction surfaces in the hydraulic device comprises a junction surface corresponding to a first component, a junction corresponding to a second component and an oil duct arranged on the first component and the second component. The sealing structure between the two junction surfaces in the hydraulic device is characterized in that a hollow pin is arranged inside the oil duct arranged on the join position of the first component and the second component, an upper sealing groove and a lower sealing groove which are respectively placed above and below the junction surfaces are arranged on the lateral side of the hollow pin, and sealing rings are embedded in the upper sealing groove and the lower sealing groove. Compared with the prior art, the hollow pin is added on the oil duct, smooth flow of oil is ensured, and meanwhile a sealing surface is changed to be arranged on the lateral side of the pin. That is, an axial sealing way of the hollow pin is adopted. Therefore, liquid seal is not influenced by plane errors of the junction surfaces of the first component and the second component, stable sealing effect can also be achieved under the condition that machining errors of the junction surfaces are great, and the goal of effectively preventing oil leakage is achieved.
Description
Technical field
The utility model relates to a kind of sealing configuration, is specifically related to the sealing configuration between the two junction in a kind of hydraulic pressure installation.
Background technique
Generally all need between the junction plane of two parts in the hydraulic pressure installation to be tightly connected, to prevent leaking outside of hydraulic oil or other hydraulic medium.Oil hydraulic motor is a kind of comparatively common hydraulic pressure installation, now take the junction plane between oil hydraulic motor middle shell and the plunger bushing as example illustrates existing sealing configuration, namely the junction plane at the housing of oil hydraulic motor has annular groove, is placed with seal ring in this annular groove, as shown in Figure 3.But when oil from oil duct through out-of-date therefore owing to exist the plane machining error between the two junction, in use at a place oil impregnate phenomenon appears easily.
Comprehensively above-mentioned, there is further improved space in the sealing configuration in the existing hydraulic pressure installation between the two junction.
The model utility content
Technical problem to be solved in the utility model is the present situation for prior art, provides a kind of and can effectively prevent the sealing configuration between the two junction in the hydraulic pressure installation that the oil impregnate phenomenon occurs, and this structure can reduce the plane machining error to the impact of oil impregnate.
The utility model solves the problems of the technologies described above the technological scheme that adopts: the sealing configuration in a kind of hydraulic pressure installation between the two junction, comprise the junction plane that first component is corresponding with second component and open oil duct on first component, second component, it is characterized in that: described first component combines with second component and a hollow pin is installed in the oil duct at position, have the upper and lower seal groove that lays respectively at described junction plane upper and lower in the side of this hollow pin, and be embedded with respectively seal ring in the described upper and lower seal groove.
As preferred version of the present utility model, described first component combines with second component and has annular groove on the oil duct inwall at position, and described hollow pin is installed in this annular groove.Utilize this annular groove, can make the wall thickness of pin and its hollow aperture size design on suitable dimension, satisfying its intensity, and guarantee fluid circulate in this pin.
Compared with prior art, because the utility model has increased the hollow pin in oil duct, when guaranteeing that fluid is smooth and easy and flowing through, sealing surface is changed on the side that is located at pin, namely adopt the axial seal mode of hollow pin, thereby the plane error on first component and the second component junction plane will no longer affect liquid sealing, thereby even if also can realize stable sealing effect in the larger situation of the machining error of junction plane, so can reach the purpose that effectively prevents oil impregnate.
Description of drawings
Fig. 1 is the utility model embodiment's structural representation;
Fig. 2 is the structural representation that removes among Fig. 1 behind hollow pin and the seal ring;
Fig. 3 is the sealed structural representation between the two junction of the prior art.
Embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
As illustrated in figs. 1 and 2, sealing configuration in this hydraulic pressure installation between the two junction, comprise the junction plane A that first component 1 and second component 2 are corresponding and open at first component, oil duct B on the second component, in the present embodiment, hydraulic pressure installation is oil hydraulic motor, the first component here is housing, second component is plunger bushing, the main improvement is, one hollow pin 3 combining the oil duct at position with second component 2 in, is installed first component 1, have upper seal groove 31 and the lower seal groove cavity 32 that lays respectively at the junction plane upper and lower in the side of this hollow pin 3, and on, be embedded with respectively seal ring 4 in the lower seal groove cavity.
Have enough wall thickness and aperture in order to ensure the hollow pin, in the present embodiment, have annular groove C at combine with the second component 2 oil duct inwall at position of first component 1, hollow pin 3 is installed among this annular groove C.
Above exemplifying on oil hydraulic motor only, but the sealing structure can be applied to need in the hydraulic pressure installation to reach between the various junction planes of liquid sealing standard.
Claims (2)
1. the sealing configuration between the two junction in the hydraulic pressure installation, comprise the junction plane (A) that first component (1) is corresponding with second component (2) and open at first component, oil duct on the second component (B), it is characterized in that: described first component (1) with state second component (2) and combine and a hollow pin (3) is installed in the oil duct at position, have in the side of this hollow pin (3) and to lay respectively at the upper of described junction plane upper and lower, lower seal groove cavity (31,32), and on described, be embedded with respectively seal ring (4) in the lower seal groove cavity.
2. the sealing configuration between the two junction in the described hydraulic pressure installation according to claim 1, it is characterized in that: described first component (1) combines with second component (2) and has annular groove (C) on the oil duct inwall at position, and described hollow pin (3) is installed in this annular groove (C).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423251 CN202768836U (en) | 2012-08-24 | 2012-08-24 | Sealing structure between two junction surfaces in hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220423251 CN202768836U (en) | 2012-08-24 | 2012-08-24 | Sealing structure between two junction surfaces in hydraulic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202768836U true CN202768836U (en) | 2013-03-06 |
Family
ID=47775411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220423251 Expired - Fee Related CN202768836U (en) | 2012-08-24 | 2012-08-24 | Sealing structure between two junction surfaces in hydraulic device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202768836U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122457A (en) * | 2016-08-25 | 2016-11-16 | 南京安维士传动技术股份有限公司 | A kind of for wind turbine gearbox hydraulic fluid port sealing structure |
| CN108561739A (en) * | 2018-07-03 | 2018-09-21 | 广西玉柴机器股份有限公司 | Half built-in compact lubricating oil pump |
-
2012
- 2012-08-24 CN CN 201220423251 patent/CN202768836U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106122457A (en) * | 2016-08-25 | 2016-11-16 | 南京安维士传动技术股份有限公司 | A kind of for wind turbine gearbox hydraulic fluid port sealing structure |
| CN108561739A (en) * | 2018-07-03 | 2018-09-21 | 广西玉柴机器股份有限公司 | Half built-in compact lubricating oil pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130306 Termination date: 20200824 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |